Their first time at Comic-Con, the group attended largely for the purpose of saying "thank you" to all of their dedicated fans and offering a exclusive look at their ninth and final season.

The Indigo Ballroom was packed with fans, the excited energy expected from a family reunion flooding the room. Lots of photos were taken, several of the shows famous songs were sung, and Harris at one point leapt out of his seat to embrace a fan who, during the Q&A time, sang to the actor a sort of “bro code” pledge.

While all of the actors and producers enthusiastically shared with the audience, Harris seemed to steal the limelight. Playing the role of the “crazy one,” as he calls it — the character Barney— Harris gave several spoilers regarding the show's next season. James will get a divorce, musical numbers will ensue, the final slap of the continuing slap bet will take place and fans can expect to finally get to know the character of “The Mother.”

“How pissed off would you have been if you never met the mother,” joked Segel. “I mean I could barely wait so I can only imagine how fans feel.”

The character list coming back for season 9 will be expansive, Thomas said.

“We’re in serious discussion about bringing the Pineapple back,” he said. Other characters fans may hope to see include Robin’s mom and one of Barney’s many girls, Brit Brit.

The next season will pick up right where Season 8 left off: the entire cast leaving for a wedding — that of Robin and Barney.

“The structure of the entire season will be within the events of the wedding, with many flashbacks and time changes,” Bays says. “Decades will be shared over this one wedding weekend.”

An extremely long-winded show, "How I Met Your Mother" is mostly character-driven. There is the love-hate relationship between Ted and Barney, the sappy love story of Lily and Marshall and the personal struggles of Robin that fans completely empathize with.

“We’re a really tight-knit group of five, on and off set,” Radnor said.

It’s the quirky elements of friendship that make the show so personable for fans. Segel said one of his favorite elements is the slap bet his character Marshall has with Barney.

“Neil and I are both comedy dorks, so it’s fun to do that little piece of madness,” he said.

But Harris did not seem to agree: “Have you seen the size of his hands?” referring to Segel. “They’re huge!”

There’s still a slap or two left and Thomas said there will be an episode in the middle of the season featuring the end of that iconic slap bet.

With the show coming to an end, executive producers spent some time thanking viewers, saying that without their support, the show would not have continued as long as it has.

“It’s been a dream working on the show,” producer Fryman said. “So to think that I wont be able to come in on a Monday morning and see all the actors and crew is heartbreaking, but I know we’ll all stay in touch, fans and all. We’re like a family now.”

Bays echoed the sentiment.

“I’m grateful that we get to have one last season to thank you, and be here at Comic-Con to show you how much we love your support.”